Mounts for transparencies



Jan. 15, 1963 R. LEWlS 3,073,052

MOUNTS FOR TRANSPARENCIES Filed Nov. 1, 1960 United States Patent Ofiice3,073,052 Patented Jan. 15, 1963 3,073,052 MOUNTS FOR TRANSPARENCKESRobert Thomas Lewis, London, England, assignor of one-half to LucyLewis, London, England Filed Nov. 1, 1960, Ser. No. 66,626 Claimspriority, application Great Britain Nov. 10, 1959 2 Claims. (Cl. 40152)This invention relates to mounts for transparencies. According to thisinvention the mount comprises an inner transparent sleeve and an outerframe, the sleeve being slida ble into the frame and means beingprovided for removably holding the sleeve in the frame. Preferably thesaid means comprises a resilient flange on the surface of the sleeveadapted to engage an internal flange on the frame.

One form of mount made according to this invention is illustrated in theaccompanying drawing, wherein:

FIGURE 1 is a front elevation of the sleeve with the transparency partlyinserted,

FIGURE 2 is an end elevation of the sleeve,

FIGURE 3 is an exploded rear View of the frame,

FIGURE 4 is a front elevation of the mount with the sleeve partlyinserted, and

FIGURE 5 is a fragmentary end section to an enlarged scale showing themeans for holding the sleeve in the frame.

Referring to the drawing, the sleeve comprises a front panel 1 and a'back panel '2 having a turn down flap 3 all integrally formed from astrip of transparent cellulose acetate, appropriately creased. Atransparency 4 to be protected can be slidden into the sleeve fromeither side, both being open. A cardboard frame into which the sleeve isplaced for viewing purposes comprises a front panel 5 and back panel 6of the same size, both having central windows 7 which are aligned whenthe two panels 5 and 6 are brought together. The upper marginal portionof the front panel 5 has on its rear face a strip of cellulose acetate 8projecting upwards forming a catch. The two panels 5 and 6 arepermanently united along their side marginal portions by adhesive orstitches, distance strips 9 being provided between them so as to providea clearance for the accommodation of the sleeve. The top and bottomedges of the frame panels are not united.

In use, the sleeve with the transparency in it is slidden into the framefrom the bottom as shown in FIGURE 4 until the edge of the turn downflap 3 is beyond the catch 5 whereupon it is drawn down again slightly.The resilience of the flap 3 causes it to engage behind the catch 8which holds the sleeve snugly in the frame in the correct position. Thesleeve is removed by pushing it up through the top of the frame.

Although the invention has been described with reference to a celluloseacetate sleeve and a cardboard frame, other suitable materials can beused provided that the sleeve is transparent and a suitable engagingflap can be provided. The frame can be made of metal or plasticsmaterial and instead of the cellulose acetate catch 8, other forms ofcatch can be provided, for example, a wire or nylon line or a slitprovided in the material of the frame, or a projecting rib formedintegrally with the frame or attached to it providing a ledge for theedge of the flap 3.

Among the advantages of this invention is that the transparencies can bestored in their protective sleeves and only placed in the frames forviewing purposes thereby saving space and the expense of numerousframes.

What I claim and desire to secure by Letters Patent is:

1. A mount for a transparency comprising in combination, a frameincluding a front panel and a back panel each of which is provided witha window, said windows being in alignment, said panels being secured oneto another in face to face relationship and spaced apart by distancestrips arranged between the two panels along the marginal portions ofthe opposite sides of the frame whereby the space between the panels isopen from top to bottom for the reception of a sleeve, a horizontalcatch disposed between said panels extending above the said windows, anda removable sleeve removably disposed in the said space, said sleevecomprising a strip of transparent material open at both ends and foldedto form front and back panels and a turned down flap on one of saidpanels adapted to engage the said horizontal catch when the sleeve is inthe said space.

2. A mount for a transparency according to claim 1, in which the catchis on the rear face of the marginal portion of the front panel andprojects upwardly at an angle to said rear face.

References Cited in the file of this patent UNITED STATES PATENTSMcArthur July 16, 1957

1. A MOUNT FOR A TRANSPARENCY COMPRISING IN COMBINATION, A FRAMEINCLUDING A FRONT PANEL AND A BACK PANEL EACH OF WHICH IS PROVIDED WITHA WINDOW, SAID WINDOWS BEING IN ALIGNMENT, SAID PANELS BEING SECURED ONETO ANOTHER IN FACE TO FACE RELATIONSHIP AND SPACED APART BY DISTANCESTRIPS ARRANGED BETWEEN THE TWO PANELS ALONG THE MARGINAL PORTIONS OFTHE OPPOSITE SIDES OF THE FRAME WHEREBY THE SPACE BETWEEN THE PANELS ISOPEN FROM TOP TO BOTTOM FOR THE RECEPTION OF A SLEEVE, A HORIZONTALCATCH DISPOSED BETWEEN SAID PANELS EXTENDING ABOVE THE SAID WINDOWS, ANDA REMOVABLE SLEEVE REMOVABLY DISPOSED IN THE SAID SPACE, SAID SLEEVECOMPRISING A STRIP OF TRANSPARENT MATERIAL OPEN AT BOTH ENDS AND FOLDEDTO FORM FRONT AND BACK PANELS AND A TURNED DOWN FLAP ON ONE OF SAIDPANELS ADAPTED TO ENGAGE THE SAID HORIZONTAL CATCH WHEN THE SLEEVE IS INTHE SAID SPACE.